Alphadogg writes "Some of the Internet's most powerful companies — including Yahoo, Google, PayPal and AOL — are brandishing a new weapon in the ongoing battle against e-mail fraud. DKIM is an emerging e-mail authentication standard developed by the IETF. DKIM, which stands for DomainKeys Identified Mail, allows an organization to cryptographically sign outgoing e-mail to verify that it sent the message. DKIM addresses one of the Internet's biggest threats: e-mail fraud. As much as 80% of e-mail that purports to be from leading brands, banks and ISPs is spoofed, indisputable to a report released in late January by the Authentication and Online Trust Alliance (AOTA)."

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